Corrosion fatigue resistant light aggregate concrete beam
A lightweight aggregate concrete, anti-corrosion technology, applied in the direction of joists, girders, truss beams, etc., can solve the problems of difficult service life and other problems, and achieve good seismic performance, impact resistance and fatigue resistance, and light weight Effect
Inactive Publication Date: 2009-12-16
SHENYANG JIANZHU UNIVERSITY
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Problems solved by technology
In addition, the development of the economy makes the construction structures or structures overloaded, and the expected service life is difficult to achieve.
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[0017] as the picture shows, Figure 5 , 6 An example of a reinforced FRP-reinforced lightweight aggregate concrete beam is given. The upper part is equipped with two steel bars 4 with a diameter of 12mm, the lower part is equipped with three FRP bars 1 with a diameter of 20mm, and the middle is equidistantly equipped with steel bars 3 with a diameter of 6mm. The inside of the beam is light aggregate concrete 2, and the total length of the beam is 3000mm , the width is 200mm, and the height is 300mm. The longitudinal bars and stirrups arranged on the beam should be determined according to the specific design situation, so the specific positions of the longitudinal bars and stirrups are not given in the figure.
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Abstract
A corrosion-fatigue-resistant lightweight aggregate concrete beam, relating to a building component, the fiber-reinforced plastic-reinforced light-weight aggregate concrete beam is composed of fiber-reinforced plastic reinforcement, steel reinforcement and a light-weight aggregate concrete layer wrapped with fiber-reinforced plastic reinforcement ; In the beam, fiber-reinforced plastic bars and steel bars are arranged in parallel, and steel bars are vertically arranged with fiber-reinforced plastic bars and steel bars, and are welded together with fiber-reinforced plastic bars and steel bars. The invention is composed of FRP bars and lightweight aggregate concrete wrapped with FRP bars, improves the durability of the structure, and has the characteristics of good ductility, light weight, good impact resistance and fatigue resistance, good earthquake resistance, corrosion resistance and the like.
Description
technical field [0001] The invention relates to a building component, in particular to an FRP reinforced lightweight aggregate concrete beam. Background technique [0002] For a long time, there have been structural durability problems in reinforced concrete structures caused by steel corrosion. Corrosion of steel bars will seriously affect the normal function of the structure and greatly reduce the service life of the structure. Many marine concrete structures such as floating structures, offshore platforms, offshore projects, bridges, etc. are usually subjected to a large number of fatigue cycles, and the fatigue load is an important factor in determining the service life of the structure besides corrosion, because the fatigue load accelerates cracking and makes it easy for chlorides to enter , thereby accelerating the deterioration process of concrete in a corrosive environment. There are many factors affecting corrosion fatigue, and the factors that affect materials or...
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IPC IPC(8): E04C3/20
Inventor 李帼昌
Owner SHENYANG JIANZHU UNIVERSITY